Pig-ejector.



Patented May 29, I900.

F. L. WHITE & J. SEMPLE. M. G. SEMPLE, Administratrix of l. SEMPLE, Decd.

PIG EJECTOR.

(Application filed July 26, 1899.)

3 Sheets-Sheet I,

(No Model.)

R O T N E V m WITN 558 ES No. 650,596. Patented May 29, i900.

F. L. WHITE & J. SEMPLE.

M. e. SEMPLE, Administratrix of 1. SEMPLE, Decd. PIG EJECTOR.

(Application filed July 26, 1899.) (No odel.) 3 Sheets-Sheet 2.

n a FL mvsm'ons 1H: Nanms verrzni co. PHDTO-UTHO.. WASHMGTDN, v.1;

Patented May '29, I900.

F. L. WHITE &. J. SEMPLE.

M. G. SEMPLE, Administratrix of l. SEMPLE, Decd. PIG EJEGTOR. a (Kpplica-tinn filed Ju1yv26, 1899.)

3 Sheets-Sheet 3,

(No Model.)

" mvsn'rons WITNESSES V. .6 Nw RN MN w UNITED STATES PATENT Orrrcn.

FRANK L. \VHITE AND MARY G. SEMPLE, ADMINISTRATRIX OF JAMES SEMPLE, DECEASED, OF PITTSBURG, PENNSYLVANIA.

PlG-EJECTO R.

SPECIFICATION forming part of Letters Patent No. dated y 1900- Application filed July 26, 1899. 'Serlal No. 725,161. (NomodeL) To all whom it 12mg concern;

Be it known that FRANK L. WHITE and J AMES SEMPLE, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Pig-Ejectors, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation, partly in section, of the improved apparatus. Fig. 2 is a top plan view of the same, partly broken away. Figs. 3 and 4 are respectively a sectional side elevation and a vertical cross-section of the controlling-valve and connections on a larger scale, and Fig. 5 is a detail view showing a modified arrangement of the motive cylinder.

The invention relates to the removing of pigs from metal molds where these metal molds are arranged in an endless series passing over wheels at the ends; and its object is to provide apparatus which will insure the removal of the pigs and enable motive fluid to be applied for striking a blow, the supply of fluid being controlled by the movement of the molds.

In the drawings, 2 2 represent the sprocketwheels at the discharge end of a Uehlin g easting apparatus, and 3 3 the molds secured between the sprocket-chains passing over these wheels. Directly in front of this discharge end is provided motive cylinders 4L 4, each having a piston-rod 5, provided at the front end with a block 6, within which is removably secured the pin 7, which strikes the pig in the mold. Each motive cylinder is mounted upon trunnions 8 8 and is provided with a depending web 9, which is normally held in vertical position by adjustable springs 10 10, these springs returning the cylinder to its normal position whenever it is swung by the dragging action of the pigs upon the piston. The adj usting-screws 10 enable the point at which the blow is delivered to be adjusted as desired.

The fluid-supply exhaust-pipes 11 and 12 extend to the centers of the trunnions on opposite sides of the cylinder and there connect with pipes 13 and 14, leading into opposite ends of the cylinder. Pipes 15 and 16 are bypasses leading from the pipes 13 and 14 and arranged to cushion the piston at the ends of its stroke. The pipes 11 and 12 are alternately inlet and exhaust pipes,and they connect with the casing 17 of a rotary valve 18 in pairs located side by side, as shown in Fig. 3. The rotary valve 18 is loosely connected with and rotated by the shaft 19, to which the sprocketwheels 2 are secured, and this valve contains the inlet-ports 20 and the exhaust-ports 21, which coaot with the ports 20 and 21 in the casing 17.

22 is the main fluid-supply pipe, which leads through the plate or head 23 of the valve,and 24 is the eXhaust-pipe,leading from the hollow center of the disk. The entering fluid passes into an annular chamber 25 in the rear of the disk and thence is fed through the inlet-ports of the valve or disk 18 to the pipes 11 and 12, the exhaust passing back through these pipes and through the disk to the exhaust-port. The ports in the disk are so arranged that a quick back-and-forth motion will be given to the piston-rod of one cylinder and immediately after to the piston-rod of the other cylinder, when a mold is directly in front thereof.

There are as many inlet and exhaust ports in duplicate as the number of molds mounted upon the carrier-a number equal to the moldspaces in the circumference of wheels 2 2--so that two sharp successive blows will be delivered against the pigs in each, mold as the molds successively reach a position in front of the striking pins.

Instead'of cushioning the piston at the ends of its stroke by the fluid in the cylinder the piston-rod 5' may extend through both ends of the cylinder, as shown in Fig. 5, and be provided withspiral springs 26, which will impinge upon the stuffing-boxes of the cylinder at each stroke and prevent jarring or injury to the parts.

ECU

erating the valve controlling the fluid-supply l to act successively on each mold; substanto the cylinder, said mechanism being actuated by the means for causing the movement of the molds; substantially as described.

2. A traveling series of molds, an end Wheel over which they move, a motive cylinder having its piston-rod arranged to act upon the pigs, and a valve device controlling the cylinder, and rotated by the Wheel over which the molds travel; substantially as described.

3. The combination with an endless series of molds, of a pair of pig-knockers arranged tially as described.

In testimony whereof we have hereunto set :5

our hands.

FRANK L. WHITE. MARY G. SEMPLE,

Ad'mi-nistmtrix 0f the est/civic of James Sample,

deceased. 

